中国科技论文在线

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2009年03月24日

【期刊论文】Interface influence on the surface plasmon resonance of Ag nanocluster composite

蒋昌忠， Feng Ren a， b， Changzhong Jiang a， *， Chang Liu a， Dejun Fu a， Ying Shi a

Solid State Communications 135(2005)268-272，-0001，（）：

-1年11月30日

Ag nanoclusters embedded in silica matrix were formed by ion implantation to different doses. The intensity of surface plasmon resonance absorption enhances with the increasing of the implanted dose, but decreases at dose higher than 1

A.， Nanocluster composites， D.， Ion implantation， D.， Surface plasmon resonance absorption

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2009年03月24日

【期刊论文】Alloy and Core-Shell Nanoclusters Formed by Sequential Ion Implantation and Thermal Annealing

蒋昌忠， Feng Ren and Chang-Zhong Jiang* Chang Liu and Yin Shi Jian-Bo Wang

Journal of the Korean Physical Society, Vol. 46, May 2005, pp. S43-S47，-0001，（）：

-1年11月30日

摘要

Ag-Cu alloy nanoclusters have been formed by sequential ion implantation. As the as-implanted sample is annealed in a reducing atmosphere, the optical absorption spectrum displays a new shoul- der peak. Transmission electron microscopy bright-field image, selected area electron diffraction pattern and high-angle annular dark field scanning transmission electron microscopy image analy- ses show that core-shell nanoclusters have been fabricated. The evolution of core-shell nanoclusters at elevated temperature was also studied.

Ion implantation,， Nanoclusters composites,， Core-shell structure,， Annealing,， Z-contrast

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2009年03月24日

【期刊论文】Metal alloy and monoelemental nanoclusters in silica formed by sequential ion implantation and annealing in selected atmosphere

蒋昌忠， F. Ren a， b， C.Z. Jiang a， H.B. Chen c， Y. Shi a， C. liu a， J.B. Wang a

Physica B 353(2004)92-97，-0001，（）：

-1年11月30日

摘要

The preparation of metal alloy and monoelemental nanoclusters in silica by Ag, Cu ion sequential implantation and annealing in selected oxidizing or reducing atmosphere is studied. The formation of metastable Ag-Cu alloy is verified in the as-implanted samples by optical absorption spectra, selected area electron diffraction and energy dispersive spectrometer spectrum. The alloy is discomposed at elevated annealing temperature in both oxidizing and reducing atmospheres. The different effects of annealing behaviors on the Ag-Cu alloy nanoclusters are investigated.

Ion implantation， Nanocluster composites， Alloy， Annealing

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2009年03月24日

【期刊论文】Formation and microstructural investigation of Ag-Cu alloy nanoclusters embedded in SiO2 formed by sequential ion implantation

蒋昌忠， F. Rena， C.Z. Jiang a， b， *， L. Zhang a， Y. Shi a， J.B. Wang a， R.H. Wang a

Micron 35(2004)489-493，-0001，（）：

-1年11月30日

摘要

We report on the formation of alloy nanoclusters in silica by Ag/Cu ion sequential implantation. The formation of alloy nanocluster has been evidenced by optical absorption spectra, selected area electron diffraction and energy dispersive X-ray spectra. The microstructure characters of nanoclusters have been studied by high resolution transmission electron microscopy. The lattice distortion of some nanoclusters has been observed. A model has been given to explain the distortion. Some defects (partial dislocation, stacking faults) have been found in nanoclusters.

Ion implantation， Nanocluster composites， High resolution transmission electron microscopy， Distortion， Defects

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2009年03月24日

【期刊论文】A new type of scanning electron microscope using the coaxial backscattered electrons

蒋昌忠， C.Z. Jiang a， b， *， P. Morin c， N. Rosenberg b

Micron 33(2002)69-74，-0001，（）：

-1年11月30日

摘要

A new coaxial detection system for backscattered electrons in SEM is described. This coaxial detection system allows us to collect only the backscattered electrons that have lost a small percentage of the primary energy, emerging from the sample surface with a take-off angle de

Scanning electron microscope， Backscattered electron， Coaxial detection， Monte Carlo simulation， Backscattering coeffcient， Composition analysis

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